The report comes after a year of bad news for the PC. Consumers, especially in wealthy countries like the U.S., are steering their dollars toward tablets and smartphones rather than upgrading their home PCs. It's the biggest challenge to the personal computer since the IBM PC was released in 1981.___ US budget deficit for March grows by $107 billion WASHINGTON (AP) â¿¿ The U.S. federal budget deficit grew more slowly in March than the previous month, keeping the annual spending shortfall on pace to finish below $1 trillion for the first time in five years. The deficit grew by $106.5 billion in March, well below the $203.5 billion added in February, the Treasury Department said Wednesday. Through the first six months of the year, the deficit has reached $600 billion. That's smaller than the $779 billion racked up in the first six months of the 2012 budget year. The budget year began on Oct. 1. ___ Jobless rates fall in most US cities in February WASHINGTON (AP) â¿¿ Unemployment rates fell in more than 80 percent of large U.S. cities in February from January, suggesting that strong hiring that month benefited the vast majority of the country. The Labor Department says rates fell in 311 of the nation's 372 largest metro areas. They rose in 45 and were unchanged in 16. Nationwide, employers added 268,000 jobs in February, the most in a year. That pushed down the unemployment rate to 7.7 percent from 7.9 percent. But hiring slowed sharply last month, when employers added only 88,000 jobs. ___ Post office retreats on eliminating Saturday mail WASHINGTON (AP) â¿¿ The financially beleaguered Postal Service backpedaled on its plan to end Saturday mail delivery, conceding Wednesday that its gamble to compel congressional approval had failed. With limited options for saving money, the governing board said the agency should reopen negotiations with unions to lower labor costs and consider raising mail prices.